Patents by Inventor Georges Trouillet

Georges Trouillet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cylindro-conical pipe joint
    Patent number: 4398756
    Abstract: Separable joint for oil well pipe in which both the male and female members have a cylindrical threaded section adjacent a frusto-conical thread section, and the female member has an internal shoulder against which the end of the male member seals.
    Type: Grant
    Filed: November 13, 1981
    Date of Patent: August 16, 1983
    Assignee: Vallourec, S. A.
    Inventors: Jean Duret, Charles Soulier, Georges Trouillet
  • Joint for pipe intended for petroleum industry
    Patent number: 4373750
    Abstract: A joint for pipes in which externally threaded male members are screwed into an internally threaded sleeve. The ends of the male members have sealing surfaces thereon and are substantially cylindrical and thread-free. The ends are so formed that upon abutment they will be urged radially outwardly. The threaded sleeve has a substantially thread-free cylindrical sealing surface intermediate its ends. When the male members are screwed into the sleeve the ends abut causing the sealing surfaces of the male members to be forced radially outwardly into tighter sealing engagement with the sealing surface of the sleeve.
    Type: Grant
    Filed: October 28, 1980
    Date of Patent: February 15, 1983
    Assignee: Societe Anonyme dite: Vallourec
    Inventors: Jean Mantelle, Georges Trouillet